package com.he.ymw.config;

import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * 拦截器
 */
public class MyHandlerInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        // 如果用户没有登录则拦截一些需要登录的业务
        if (null == request.getSession().getAttribute("user")) {
            request.setAttribute("msg","没有权限，请先登录");
            request.getRequestDispatcher("/toLogin").forward(request,response);
            return false;
        } else {
            return true;
        }

    }
}
